I have installed the Boomslang dpfi obd0 to obd1 for my D16z6 swap. The car runs fine but it idles rough at about 1500rpm. Could it be the IAC valve behind the intake manifold? I also have a check engine light for my O2 sensor and Vtec pressure. I'm still trying to diagnose those problems too, but still haven't found a solution. Any info or suggestions?
Thanks,
Matt

 

is the idle surging? just asking but u are useing a 4 swire 02 sensor?and clearify what u mean by vtec pressureu mean vtec pressure switch?

 

yes 4 wire o2 sensor and vtec pressure switch

 

had that same problem.

http://www.ef-honda.com/ben/Badidle.php

 

https://honda-tech.com/zerothread?id=1812135